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Coordinate Systems

We will need to make some measurements
of space and time.

So, we will utilize a coordinate system to keep
track of where we start and where we finish.

The sine of an angle is the name of the ratio of the length of the opposite side to the length of the hypotenuse.
This is a number between -1 and +1. That's all!
Why Vectors?

Go ahead click and play!

Vectors have length and are directional.
They are arrows.
Many problems in physics will utilize these arrows.
We will use trig to add and subtract these arrows.

What are unit vectors?

More ways to add vectors I,II,III


You can add as many vectors together as you wish. All you have to do is put them together in any fashion 'head-to-tail'
When you want to subtract two vectors simply reverse the vector to be subtracted then add them
Everthing you wanted to know
Trigonometry and Vector Analysis